Traffic Signal Optimization

Project Details

Client

Location

Services

The Michigan Department of Transportation selected Hubbell, Roth & Clark, Inc. (HRC) to analyze and retime 14 traffic signals in Cass and Allegan Counties in the Southwest Region. The project was funded by the Congestion Mitigation Air Quality program. The goal of the project is to provide MDOT with optimized traffic signal operations. Retiming signals on a regular cycle allows for updates to current MMUTCD standards and accommodates interim changes to intersections/corridors. One of the corridors M-40 turns in the middle of the corridor being optimized; most of the traffic is making a southbound left turn or a westbound right turn, making the progression analysis unique.

HRC responsibilities include:

24 Hour vehicle counts by approach

Turning movement counts during peak hours

Field verification of existing conditions

Synchro model development for existing and optimized conditions for three peak hours